Increased air in and OUT of engine

[Paul Panepinto]

Hello:

I am doing this fuel injection conversion project to my 1985 Bronco II with 2.8L carburetor engine. http://broncoii.org/forum/index.php?topic=421.0 (http://broncoii.org/forum/index.php?topic=421.0)

I am convinced this will give my Bronco II a whole lot more air so that I can push more fuel into it to create bigger combustion in the cylinders. What I am concerned about is getting the exhaust out. I am using an RV camshaft to open the valves wider, but are the exhaust ports, exhaust pipes, catalytic converter and muffler going to be able to expel the increased air and exhaust?

Also - does anyone know where I can get a mid-1970's Mustang 171ci (2.8L) intake manifold, plenum and EGR valve?

Thanks,

Paul Panepinto

[BLOODBANE]

Always remember there is no "replacement for displacement". The FI will help, but don't flood your little 2.8 with too much or it will run like crap. I have done a V-8 swap into my 84 Ranger, and to tell you the truth, if I had to do it all over again, I would find a wrecked Explorer or Ranger with the 4.0 and swap that in. When I went with the HOLLEY Pro-Jection set-up on my V-8, I went with the 2D kit. Its good to like 300hp(which I'm close to) but can be tuned for the engine Im running. With the bigger 4D kit from HOLLEY it would have been a nightmare.
Now if you want to do the V-8 swap find a good block, tranny/t-case combo. I have the book from MRE and it was my bible. Let me know how its going, cause there are some cheaper ways of doing the same thing that some of the "swap manuals" don't include.............Later........BLOOD.....
P.S. If you do the V-8 swap be prepared for some down time, mine took me a month, I used a C-6/Dana 20 combo though and the MRE book didn't have that listed..........:thumbsup:

[shawns 64 F100]

Welcome to RMFT, first of all, I dont know what EFI system you plan to use. im sure if it has a larger intake manifold port you can increase air flow, but the engine, itself can only draw in so much air on its own. I bet volumetric Efficienct is around 60% tops without adding a blower, turbo or N20. as far as your exhaust syetem, youll definately need to open up them pipes to allow the burnt fuel/air to escape.
youll need to ask a engine builder about your cam specs. they would need to know your cylinder heads flow capabilities etc etc. I doubt a mild lift RV cam can make too much of a difference in the performance overall, just better midrange power due to RV cams are made for vehicles that do heavy duty work either towing or other requirements for medium duty work. if your looking to make some power youll definately need to increase cylinder pressure